BTR5001:Stop valve,Brass Stop Valve,Valve-Extension stop valve. 100%Factory Test. The Beter is better. Stop valve,Brass Stop Valve,Valve-Extension stop valve,Best price for high quality. NOComponentMaterial1BodyBrass2Wedge DiscBrass3StemBrass4BonnetBrass5Packing Gland NutBrass6Packing RingsTeflon7Handle WheelCast Iron8NameplateAluminium9NutBrass Available size throgh 1/2"-4"